The dura mater and pia mater are referred to as:

Read the following statements (A-D):-

(A) The medulla contains centres that are responsible for controlling respiration, cardiovascular reflexes and gastric secretions.

(B) The organ of Corti is a structure containing hair cells that act as auditory receptors. It is located on the basilar membrane.

(C) The inner ear also comprises a complex system located above the cochlea called the vestibular apparatus.

(D) The cerebellum combines information received from the semicircular canals of the ear and the auditory system.

How many of these above statements are correct?